Acer Veriton X4665g vs. Lenovo ThinkCentre M900 Small

Comparison and Differences

Acer_Veriton_X4665g.jpg case front and back pannel

Lenovo_ThinkCentre_M900_Small.jpg case front and back pannel

Model
Form factor	Small	Small
CPU options	Intel Gen8&9 i3/i5/i7; Pentium; Celeron	Intel Gen6 i3/i5/i7; Celeron; Pentium;
Chipset	B365	Q170
Dedicated GPU *	Radeon RX 6400 Low Profile	GeForce GT 1030 Low Profile
RAM	UDIMM DDR4-2666	DIMM DDR4-2133
RAM slots	2	4
RAM speed	2666 MT/s	2133 MT/s
RAM max	64 GB	64 GB
USB ports	(2x) USB-A 3.0; (4x) USB-A 2.0; (2x) USB-A 3.1	(8x)USB-A 3.0;
Video ports	DisplayPort 1.2; HDMI 1.4; VGA	(2x) DisplayPort 1.2; VGA;
Other ports	RJ45; (2x) Mic, Speaker; Line in; Line out; PS/2 ports; Serial	RJ45; Hdph; (2x) Mic; Line-Out; Line-In; Serial;
Optional ports	Parallel; Serial	2x USB-A 2.0; Media card reader (USB 2.0); (2x) PS2; eSATA;
SATA ports	3	3
PCI slots	PCIe 2.0 x16; PCIe 2.0 x1; PCI	PCIe 3.0 x16; PCIe 3.0 x1; PCIe 3.0 x16 (wired x4); M2 to PCI adapter (optional);
M.2 slots	M.2 2280/2230 M-key (PCIe 2.0 x4, NVMe); M.2 2230 (WiFi/BT)	M.2 (WiFi/BT or PCI extension card)
Drive bays	3.5in; 5.25 inch	2.5in; 2.5/3.5in; 5.25in (slim);
PSU	180/300 W	TFX 210 W
Weight	7.00 kg (15.40 lb)	9 kg (19.8 lbs)
Released	2018	2015
Manual	link	link
Price**	Check Price	Check Price

** As an Amazon associate we earn from qualifying purchases.
* Dedicated GPU warning: Check if your particular power supply model has enough power. Additionally some PSUs don't come with an auxiliary PCIe power connector and you may need to buy a SATA to PCIe power adapter.

Differences between Acer Veriton X4665g and Lenovo ThinkCentre M900 Small

If you are looking for a more modern desktop, then you should go with the Acer Veriton X4665g which was released in 2018. The Lenovo ThinkCentre M900 Small is older and entered production in 2015.

Both models have the same form factor, meaning reoughtly they have the same phiysical size and form.

Processor

Usually the newer the generation of the CPU, the better the performance and efficiency is. If your budget allows it, you should go with the Acer Veriton X4665g as it is running a newer generation CPU. This is not to say that Lenovo ThinkCentre M900 Small is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Lenovo ThinkCentre M900 Small has 4 RAM slots while the Acer Veriton X4665g has only 2 slot(s). This is not something to worry about. Just make sure you take it into consideration when planning how much RAM you are going to use.

The Acer Veriton X4665g is using the faster 2666 MT/s RAM. The Lenovo ThinkCentre M900 Small is slower by supporting RAM speeds of up to 2133 MT/s. In addition, you will be able to install the same amount of RAM in both models, and most probably 64 GB of RAM will be enough for most people. However, if you will be needing more RAM, make sure to check other desktop models too.

Ports

Both models have the same amount of USB ports for total count of 8. If this is not enough, using a USB hub is always a viable option. What is nice about the Acer Veriton X4665g, is that it has 2 USB 3.1 port(s) which allows transfer of up to 10Gb/s. Unfortunately, the Lenovo ThinkCentre M900 Small has no such port, thus restricting your transfer speeds significantly. For people who want to use external drives on regular basis, this might be an issue.

DisplayPort is crucial for any desktop machine. It is good to see that both models are featuring DisplayPorts. However, the Lenovo ThinkCentre M900 Small comes with 2 ports, while the Acer Veriton X4665g has only 1. If you are planning to use multiple monitors, the Lenovo ThinkCentre M900 Small is the better choice.

The Acer Veriton X4665g comes with an HDMI port, while the Lenovo ThinkCentre M900 Small does not support the interface. Of course missing HDMI port is something that can be easily fixed with a good adapter (e.g. DisplayPort to HDMI).

SATA slots are located on the motherboard and it is where SSD, HDD and Optical Disk Drives are connected. Each of the two models being compared have 3 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.

If you want the fastest transfer speeds for your SSD, an M.2 interface is crucial. Thus, if the M.2 SSD slot is a mandatory requirement for you, go with the Acer Veriton X4665g. Sadly, the Lenovo ThinkCentre M900 Small has no such slot, and you will be forced to use the SATA interface instead.

Make sure that the available M.2 slot supports the PCIe (also called NVMe) interface. This is important as there are M.2 slots which support only the inferior SATA III interface. For comparison, the SATA III interface has max speeds of 6Gb/s, while the PCIe 3.0 x4 will support speeds up to 32Gb/s!

Power Supply

Having a Power Supply Unit with high power rating is important, if you are going to use components which require extra power. The Lenovo ThinkCentre M900 Small comes with a decent 210 Watt PSU, but the Acer Veriton X4665g has a more powerful one rated at 300 Watts. Choosing either one depends on your specific requirements and use case. Also don't forget that some models might have more than one PSU option - try to always get the most powerful one, especially if you plan to upgrade to a powerful GPU.